50021566163 has 4 divisors (see below), whose sum is σ = 50029528800. Its totient is φ = 50013603528.

The previous prime is 50021566121. The next prime is 50021566183. The reversal of 50021566163 is 36166512005.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 50021566163 - 2¹⁸ = 50021304019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50021566183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3971888 + ... + 3984461.

It is an arithmetic number, because the mean of its divisors is an integer number (12507382200).

Almost surely, 2^50021566163 is an apocalyptic number.

50021566163 is a deficient number, since it is larger than the sum of its proper divisors (7962637).

50021566163 is an equidigital number, since it uses as much as digits as its factorization.

50021566163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7962636.

The product of its (nonzero) digits is 32400, while the sum is 35.

The spelling of 50021566163 in words is "fifty billion, twenty-one million, five hundred sixty-six thousand, one hundred sixty-three".